Emergency stuffing box



July 13 19.26

LEEME@ M.y P. WYATTl EMERGENCY STUFEING Box Filed April 28, l1924 stuffing box, the same may rarer-aaa .any i3, ieee.

teams MARVIN P. WYTT, OF HOHER, LOUISIANA.

i EMERGENCY STUFFING BOX.

Application led April 28, 192e. Serial No. 709,699.

rilhis invention relates to improvements in packing or stung boxes adapted for use with the packing equipment of well pumping apparatus'. y

'lhe primary object of the invention is the Vprovision of an emergency stufn which may be used to seal the connection of the polish rod of the ordinary packing or stuffing box.

'Heretofore a stuing box has been used at the top of thertube or casing, and through which the polish rod is slidably supported to permit o'f a liquid seal connection of the polish rod with'respect to the tube. -When this packing isworn to the Aextent that it leaks, it becomes necessary to shut down operation of the well; and in many-instances` it becomes necessary for an operator to go a considerable distance to the power house to obtain a new packing. During this time the 'oil is spurting out of the well', and goes to waste; it not being unusual to blow out from five to ten barrels'of oil each time that the packing`has t'o be changed. As it is ordinarily the case that the packing has to be changed from one to three times per week, this loss is considerable. However, with the use of the improved emergency be brought into play to provide a liquid seal connection between the polish rod and tube, below the ordinary stuing box, and the operation of the well need not necessarily be discontinued during fixing of the packing, and atall events the improved emergency stuffing box prevents the waste of oil which now results from a leaky stuffing box.

@ther objectsand advantages of this invention will be apparent during the course of the following detailed description.

In the accompanying drawing, vforming a p artof this specification, and wherein similar reference charactersv designate correelpondingA parts throughout the several I v1ews,

Figure 1 is a fragmentary cross sectional A view taken through the upper portion of the conventional tube casing, showing the rod o erably disposed through the conventiona pachng box, and through the im- -proved emergency stutiing box provided therefor. v

Figure 2 is a cross sectional view taken substantially on line 2-2 of Figure 1.

Figure 3 is a longitudinal cross sectional view taken through the improved stuing with the tubeduring repair j polish box,2substantially on the line 3-3 of Figure Figure 4; is a cross sectional view taken substantiallyon line 4-4 of Figure 1.

Figure 5 is a' perspective view showing a novel member which may be adjusted into engagement with the polish rod to provide a liquid seal connection therewith.

ln the drawing, wherein for the purpose of illustration is shown only a preferred embodiment of this invention, the letter A may generally designate the conventional tube or well casing, within which the polish rod B is reciprocably disposed. At the upper end of the tube QA, and at all events above the flow line 'C which connects with the tube A, the conventional packing or stuihng box l) is provided. The improved emergency stuffing box is placed below the conventional stuiiing -box D, preferably between the same and the flow line C.

The details of the conventional stuffing box D are wellunderstood, and generally they comprise a casing portion 15, which in the ordinaryinstance is connected directly tothe tubing A, but which in the improved instance is coupled to the casing or housing portion 2) of the improved emergency stuffingbox D, above the same. A follower 16 is supported in the casing portion 15 of .the

conventional stuing box D, andthe-polish rod B is reciprocably disposed through both the casing 15 and its follower 16; packing material 18 being provided in the casing 15, circumferentially about the polish rod B, upon which the follower 16 rests. Bolts 19 are provided for connection of .the follower 16 with its casing 15, and springs 21 may be provided for urging the follower to compress the packing material 18 about the pol. ish rod B, as can be well understood by anyone skilled in the art to which this invention relates. v

Referring to the improved emergency stutling box E, the casing portion 2O threv of is preferably cross-shaped and comprises I wheels 51,

tioned for adjustment to engage the polish rod B which extends through the passage- Vway 25.

Lateral extensions 29 and 30 are provided in oppositely disposed relation on a part of the housing 20, in right angled relation with respect to the portions 23 and 24 above mentioned. Slideways 35 and 36 are respectively provided in the portions 29 and 30, which slidably receive therein bodies 38 and 39, so that said bodies 38 and 39 may have a linear motion toward or away from the polish rod B. At their inner ends the bodies 38 and 39 are recessed, as at 41, and supportrubber or fiber gasket material 42 in projecting relation outwardly from the recessed portion 41; the fiber material 42 preferably providing a concavity 43 which may engage in snug relation about one half the clrcumference of the polish'rod B.

The improved gasket supporting blocks or bodies 38 and 39 are rectangularin formation, and may be adjusted so that the packing elements 42 thereof engage the polish rod B to seal the same in a non-leak connection at the point where the polish rod B enters the constricted portion of the passageway 25. To provide for the adjustable clamping of the bodies 38 and 39 in such relation, each of the extensions 39 and 30 support a screw plug 45 in the outer end thereof, which screw plugs 45 adjustably support screws 47 axially therethrough. The inner ends of the screws 47 are provided with heads 48 which lit within suitable T- shaped slots 49 provided in the outer ends of each of the bodies 38 and 39 to provi-de a swivel connection. The outer ends of the screws 47 provide hand engaging heads or by means of which the adjustment of the screws 47 may be effected.

Referring to the operat-ion of the einergency stuiling box E, when thc stuing box D leaks, or needs to be changed, it is merely necessary for the operator to adjust the screws 47 until the packing portions 42 of thesliding blocks 38 and 39 engage against the polish tion. It is at once obvious that this provides a liquid seal connection of the polish rod B in the tube A, at'a point vbetween the conventional packing box D and the flow line C. This liquid seal connection permits sliding of the polish rod B, so that operation of the polish rod may still be continued, and no loss of petroleum is occasioned whatsoever.

Fomthe foregoing description of this invention it is apparent that a novel type of emergency stuffing box has been rovided, which is very compact and well a apted to function in conserving oil. The positive swivel connection of the adjusting screws with the packer su porting bodies insures that the latter will e positively 4out of enrod B with a tight clamping ac-l gagement with the polish rod during nor,- mal operation of the pumping equipment, so that there will not be any unnecessary wear upon the packing elements. The adjustment of these screws may provide for entire withdrawal of the packing elements from the passageway through which the packer rod passes in the emergency stulling ox housing. The bodies supporting the packer elements may be entirely withdrawn from their guide passageways at each side of the passageway of the housing, merely by detachment of the plugs 45, and this is important, since it obviates the necessity of detachingthe cross shaped housing, as is necessary in most types of stulhng boxes where it is desired to replace packing or make other repairs.

Various changes in the "shape, size, and arrangement of parts may be made to the form of the invention herein shown and described, without departing from the spirit of this invention or the scope of the claims.

I claim: l

l. As an article of manufacture a stuffing box structure comprisinga housing having a straight passageway and being provided with right angled openings at opposite sides of said passageway, substantially rectangular shaped bodies carried in snug sliding relation in said openings having ends facing into said passageway, packing material carried at the facing ends of said bodies adapted to extend into said passageway, said housing outwardly of said bodies and openings therefor providing enlarged internally screw threaded compartments, detachable plugs for said compartments provided with internally screw threaded openings,

and adjusting screws adjustably connectedr 1n said screw threaded openings of said plugs adapted for engagement with said bodies to permit their adjustment with respect to the passageway.

2. As an article of manufacture a stuffing box structure comprising a housing providv ing AaL passageway stricted central posite sides of therethrough having a reportion, said housing at opthe restricted central portion providing shallow substantially rectangular openings, bodies of substantially rectangular form snugly slidablefin said openings including ends a'dapted toA extend in facing relation into said restricted portion of the passageway, substantially concave packing members carried in inwardly projecting relation by the inner ends of said bodies iadapted to extend Yinto the restricted portion of said passageway, said bodies 'being of such nature that they may be retracted upon movement of the same in said openings away from said assageway; said housing outwardly of said) body receivin openings having 'enlarged screw threaded compartments, detachable plugs screw said plugs,

threaded in said compartments providing central screw threaded openings, screws adjustable in said screw threaded openings of and means providing a positive swivel connection between the inner ends of said screws and said bodies.

3. A stuffing box construction comprising ahousing having a passageway therethrough and being provided with a lateral opening into said passageway, a packing supporting body slidable in said opening away from and towards the passageway of said housing, said housing outwardly of the opening from the passageway providing an enlarged internally screw threaded compartment, an externally screw threaded plug for said compartment having an internally 'screw threaded passageway therethrough, a screw threaded member for said last mentioned screw threaded passageway, and means for connecting said screw threaded member to said packing supporting body.

4. A stuffing box construction. comprising a housing having a passageway therethrough and being provided with lateral openings at opposite sides thereof into said Ipassageway, a packing supporting member slidable in each of said openings away from and toward the passageway of said housing, said housing outwardly of said opposite openings having enlarged internally screw threaded' compartments therein, of a size considerably larger than said openings and through which the packing supporting body may be assembled or removed with respect to their respective openings, a relatively large external screw threaded plug adjustable in each of said internally screw threaded compartments and axially thereof havin a screw threaded passageway therethroug, a screw threaded member for each of said last mentioned screw threaded passageways having a handle exteriorly of the respective plugs, each of said screw threaded members having a swivel connection with its respective packing supportingmember whereby to adjust the latter with respect to the passageway of said housing upon adjustment of the screw threaded members in their respective plugs.

MARVIN P. WYATT. 

